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Is Our Universe Trapped Inside a Black Hole?

2 months ago
"Is everything we see around us is sealed within a black hole?" asks Space.com. Because here's the thing. The $10 billion James Webb Space telescope (in operation since 2022) "has found that the vast majority of deep space and, thus the early galaxies it has so far observed, are rotating in the same direction. While around two-thirds of galaxies spin clockwise, the other third rotates counter-clockwise." In a random universe, scientists would expect to find 50% of galaxies rotating one way, while the other 50% rotate the other way. This new research suggests there is a preferred direction for galactic rotation... "It is still not clear what causes this to happen, but there are two primary possible explanations," team leader Lior Shamir, associate professor of computer science at the Carl R. Ice College of Engineering, said in a statement. "One explanation is that the universe was born rotating. "That explanation agrees with theories such as black hole cosmology, which postulates that the entire universe is the interior of a black hole. "But if the universe was indeed born rotating, it means that the existing theories about the cosmos are incomplete." Black hole cosmology, also known as "Schwarzschild cosmology," suggests that our observable universe might be the interior of a black hole itself within a larger parent universe. The idea was first introduced by theoretical physicist Raj Kumar Pathria and by mathematician I. J. Good. It presents the idea that the "Schwarzchild radius," better known as the "event horizon," (the boundary from within which nothing can escape a black hole, not even light) is also the horizon of the visible universe. The article cites a theory by Polish theoretical physicist Nikodem Poplawski of the University of New Haven that ultimately black holes don't compress indefinitely into a singularity. "The matter instead reaches a state of finite, extremely large density, stops collapsing, undergoes a bounce like a compressed spring, and starts rapidly expanding," Poplawski explained to Space.com... The scientist continued by adding that rapid recoil after such a big bounce could be what has led to our expanding universe, an event we now refer to as the Big Bang... "I think that the simplest explanation of the rotating universe is the universe was born in a rotating black hole." Team leader Shamir offers another theory: that we just need to re-calibrate our distance measurements for the deep universe. (Which could also explain the difference in the expansion rates in the universe "and the large galaxies that according to the existing distance measurements are expected to be older than the universe itself.")

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EditorDavid

Last Year Waymo's Autonomous Vehicles Got 589 Parking Tickets in San Francisco

2 months ago
"Alphabet's Waymo autonomous vehicles are programmed to follow the rules of the road..." notes the Washington Post. But while the cars obey speed limits and properly use their turn signals — they also "routinely violate parking rules." Waymo vehicles driving themselves received 589 tickets for parking violations in 2024, according to records from San Francisco's Municipal Transportation Agency... The robots incurred $65,065 in fines for violations such as obstructing traffic, disobeying street cleaning restrictions and parking in prohibited areas... [Waymo is responsible for 0.05% of the city's fines, according to statistics from the article.] Parking violations are one of the few ways to quantify how often self-driving companies' vehicles break the rules of the road... Some parking violations, such as overstaying in a paid spot, cause inconvenience but do not directly endanger other people. Others increase the risk of crashes, said Michael Brooks, executive director of the Center for Auto Safety. Anytime a vehicle is obstructing the flow of traffic, other drivers might be forced to brake suddenly or change lanes, he said, creating risks for drivers, pedestrians or other road users... San Francisco transit operators lost 2 hours and 12 minutes of service time in 2024 because of Waymo vehicles blocking or colliding with transit vehicles, according to San Francisco Municipal Transportation Agency records. Autonomous vehicles have obstructed firefighters responding to emergency scenes in San Francisco, triggering city officials to ask for tougher oversight from state regulators. The article adds that driverless Waymo vehicles in Los Angeles received 75 more tickets in 2024 — "with $543 in fines still outstanding, according to records from the Los Angeles Department of Transportation."

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EditorDavid

Climatologist Michael Mann Finally Won a $1M Defamation Suit - But Then a Judge Threw It Out

2 months ago
Slashdot has run nearly a dozen stories about Michael Mann, one of America's most prominent climate scientists and a co-creator of the famous "hockey stick" graph of spiking temperatures. In 2012 Mann sued two bloggers for defamation — and last year Mann finally won more than $1 million, reports the Washington Post. "A jury found that two conservative commentators had defamed him by alleging that he was like a child molester in the way he had 'molested and tortured' climate data." But "Now, a year after that ruling, the case has taken a turn that leaves Mann in the position of the one who owes money." On Wednesday, a judge sanctioned Mann's legal team for "bad-faith trial misconduct" for overstating how much the scientist lost in potential grant funding as a result of reputational harm. The lawyers had shown jurors a chart that listed one grant amount Mann didn't get at $9.7 million, though in other testimony Mann said it was worth $112,000. And when comparing Mann's grant income before and after the negative commentary, the lawyers cited a disparity of $2.8 million, but an amended calculation pegged it at $2.37 million. The climate scientist's legal team said it was preparing to fight the setbacks in court. Peter J. Fontaine, one of Mann's attorneys, wrote in an email that Mann "believes that the court committed errors of fact and law and will pursue these matters further." Fontaine emphasized that the original decision — that Mann was defamed by the commentary — still stands. "We have reviewed the recent rulings by the D.C. Superior Court and are pleased to note that the court has upheld the jury's verdict," he said. Thanks to Slashdot reader UsuallyReasonable for sharing the news.

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EditorDavid